Observation 184721: Boletus fibrillosus Thiers

When: 2014-10-21

Collection location: Dry Lagoon, Humboldt Co., California, USA [Click for map]

Who: Connor Adams (CLAdams)

No specimen available

Found in coastal Sitka spruce forest,

Colors seem different and duller than B. smithii, also pores bruising blue but erratically and weakly. Stature also different than B. smithii

Key features:

Stem tapering upwards, but without an obvious bulb.

Reddish brown reticulate stem abruptly changing to yellow at the top.

Pores brightish yellow, bruising blue erratically and weakly

Taste mild.

KOH tests see above.

Proposed Names

27% (1)
Used references: Keyed to B. smithii in MD, not fitting description.
Based on chemical features: KOH on cap cuticle: crimson, KOH on flesh: orange.
59% (2)
Recognized by sight: yellowish pores, weak bluing, dark, innately-fibrillose cracking brown cap, growth in coastal spruce forest in N. California

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2014-10-21 16:06:38 PDT (-0700)
Last modified: 2015-03-15 20:53:45 PDT (-0700)
Viewed: 30 times, last viewed: 2018-04-09 13:10:14 PDT (-0700)
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